Nozzle Repair on Produced Water Caisson

Overview

A 20” nozzle coming off a produced water caisson on a North Sea offshore installation, had sustained external corrosion resulting in a through wall defect. A weld repair had been affected but was deemed not ‘fit for purpose’ and so the client required an Engineered composite repair to reinstate the integrity of the pipework.

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Scope

The scope of work was to provide an engineered design, with 2 year repair lifetime, Technowrap™ trained personnel and Technowrap 2K™ materials to affect repair.

Challenges

With the location of the defect the repair entailed a patch repair on the caisson and a full circumferential repair on the 20” pipework which included encapsulation & landing on a flange.

Solution

Technowrap materials were rapidly pulled together and Technowrap™ supervisor & Technowrap Technician were mobilised, at short notice, so that the Engineered Technowrap 2K™ repair could be implemented to allow the client to go back online & minimise the asset downtime.